Cita APA (7a ed.)

Crossen, C., & Tirion, W. (2008). Binocular astronomy (2nd English ed.). Willmann-Bell.

Cita Chicago Style (17a ed.)

Crossen, Craig, y Wil Tirion. Binocular Astronomy. 2nd English ed. Richmond: Willmann-Bell, 2008.

Cita MLA (9a ed.)

Crossen, Craig, y Wil Tirion. Binocular Astronomy. 2nd English ed. Willmann-Bell, 2008.